Question 1

Consider the reaction N2(g)+ 3H2(g)   
2NH3(g).If nitrogen is removed from the system at equilibrium, what will happen to the hydrogen (H2)concentration?

Accepted Answer

Question 2

Sodium carbonate, Na2CO3(s) , can be prepared by heating sodium bicarbonate, NaHCO3(s) as shown below. 2NaHCO3(s)  2CO3(s) , can be prepared by heating sodium bicarbonate, NaHCO3(s) as shown below. 2NaHCO3(s)      Na2CO3(s) + CO2(g) + H2O(g) Kp = 0.23 at 100ºC If a sample of NaHCO3 is placed in an evacuated flask and allowed to achieve equilibrium at 100ºC, what will the total gas pressure be? A) 0.46 atm B) 0.96 atm C) 0.23 atm D) 0.48 atm E) 0.11 atm" class="answers-bank-image d-inline" rel="preload" >  
Na2CO3(s) + CO2(g) + H2O(g) Kp = 0.23 at 100ºC
If a sample of NaHCO3 is placed in an evacuated flask and allowed to achieve equilibrium at 100ºC, what will the total gas pressure be?

Accepted Answer

A)  0.46 atm
B)  0.96 atm
C)  0.23 atm
D)  0.48 atm
E)  0.11 atm

Question 3

Consider the equilibrium equation C(s)+ H2O(g)   
 CO(g)+ H2(g), $\Delta$H = 2296 J.Which way will the reaction shift if the volume of the container is decreased?

Accepted Answer

Towards th...

Question 4

Consider the reaction N2(g)+ 3H2(g)   
2NH3(g).If nitrogen is added to the system at equilibrium, what will happen to the ammonia concentration?

Accepted Answer

Question 5

Which of the following rate laws is consistent with the following mechanism? A(g) + B(g)    AB(g) fast equilibrium (Kc1)  AB(g) + C(g)  \rarr  AC(g) + B(g) slow A) Rate = k[A][B] B) Rate = kKc1[A][B][C] C) Rate = k[AC][B]/[AB][C] D) Rate = [AB]/[A][B] E) Rate = Kc1[AC]/[A][C] " class="answers-bank-image d-inline" rel="preload" >  
AB(g) fast equilibrium (Kc1) 
AB(g) + C(g)  →\rarr→  AC(g) + B(g) slow

Accepted Answer

A)  Rate = k[A][B]
B)  Rate = kKc1[A][B][C]
C)  Rate = k[AC][B]/[AB][C]
D)  Rate = [AB]/[A][B]
E)  Rate = Kc1[AC]/[A][C]  B

Question 6

Consider this gas phase equilibrium system: PCl5(g)  5(g)      PCl3(g) + Cl2(g)  \Delta Hºrxn = +87.8 kJ/mol. Which of these statements is false? A) Increasing the system volume shifts the equilibrium to the right. B) Increasing the temperature shifts the equilibrium to the right. C) A catalyst speeds up the approach to equilibrium and shifts the position of equilibrium to the right. D) Decreasing the total pressure of the system shifts the equilibrium to the right. E) Increasing the temperature causes the equilibrium constant to increase. " class="answers-bank-image d-inline" rel="preload" >  
PCl3(g) + Cl2(g)  Δ\DeltaΔ Hºrxn = +87.8 kJ/mol.
Which of these statements is false?

Accepted Answer

A)  Increasing the system volume shifts the equilibrium to the right.
B)  Increasing the temperature shifts the equilibrium to the right.
C)  A catalyst speeds up the approach to equilibrium and shifts the position of equilibrium to the right.
D)  Decreasing the total pressure of the system shifts the equilibrium to the right.
E)  Increasing the temperature causes the equilibrium constant to increase.

Question 7

For the reaction PCl3(g) + Cl2(g)  3(g) + Cl2(g)      PCl5(g) at a particular temperature, Kc = 24.3.Suppose a system at that temperature is prepared with [PCl3] = 0.10 M, [Cl2] = 0.15 M, and [PCl5] = 0.60 M.Which of the following is true based on the above? A) Qc > Kc, the reaction proceeds from left to right to reach equilibrium B) Qc > Kc, the reaction proceeds from right to left to reach equilibrium C) Qc c, the reaction proceeds from left to right to reach equilibrium D) Qc c, the reaction proceeds from right to left to reach equilibrium E) Qc = Kc, the reaction is currently at equilibrium" class="answers-bank-image d-inline" rel="preload" >   PCl5(g) at a particular temperature, Kc = 24.3.Suppose a system at that temperature is prepared with [PCl3] = 0.10 M, [Cl2] = 0.15 M, and [PCl5] = 0.60 M.Which of the following is true based on the above?

Accepted Answer

A)  Qc > Kc, the reaction proceeds from left to right to reach equilibrium
B)  Qc > Kc, the reaction proceeds from right to left to reach equilibrium
C)  Qc c, the reaction proceeds from left to right to reach equilibrium
D)  Qc c, the reaction proceeds from right to left to reach equilibrium
E)  Qc = Kc, the reaction is currently at equilibrium B

Question 8

When the following reaction is at equilibrium, which of these relationships is always true? 2NOCl(g)    2NO(g) + Cl2(g)  A) [NO] [Cl2] = [NOCl] B) [NO]2 [Cl2] = [NOCl]2 C) [NOCl] = [NO] D) 2[NO] = [Cl2] E) [NO]2 [Cl2] = Kc[NOCl]2" class="answers-bank-image d-inline" rel="preload" >  
2NO(g) + Cl2(g)

Accepted Answer

A)  [NO] [Cl2] = [NOCl]
B)  [NO]2 [Cl2] = [NOCl]2
C)  [NOCl] = [NO]
D)  2[NO] = [Cl2]
E)  [NO]2 [Cl2] = Kc[NOCl]2

Question 9

Consider the following equilibrium,
4NH3(g)+ 3O2(g)   
2N2(g)+ 6H2O(g)+ 1531 kJ
State whether the concentrations the reactants would increase, decrease, or remain constant after nitrogen gas was removed from the system.

Accepted Answer

Question 10

Hydrogen iodide decomposes according to the equation:
2HI(g)   
 H2(g)+ I2(g), Kc = 0.0156 at 400ºC
A 0.660 mol sample of HI was injected into a 2.00 L reaction vessel held at 400ºC.
Calculate the concentration of H2 equilibrium.

Accepted Answer

Question 11

When the following reaction is at equilibrium, which of these relationships is always true? 2 O3(g)  3(g)      3 O2(g)  A) [O3] = [O2] B) [O3]2 = [O2]3 C) Kc[O3]2 = [O2]3 D) Kc[O2]3 = [O3]2 E) Kc[O2]2 = [O3]3" class="answers-bank-image d-inline" rel="preload" >  
3 O2(g)

Accepted Answer

A)  [O3] = [O2]
B)  [O3]2 = [O2]3
C)  Kc[O3]2 = [O2]3
D)  Kc[O2]3 = [O3]2
E)  Kc[O2]2 = [O3]3

Question 12

Consider this reaction at equilibrium: 2SO2(g) + O2(g)  2(g) + O2(g)      2SO3(g) ,  \Delta Hºrxn = -198 kJ/mol If the volume of the system is compressed at constant temperature, what change will occur in the position of the equilibrium? A) A shift to produce more SO2 B) A shift to produce more O2 C) No change D) A shift to produce more SO3 " class="answers-bank-image d-inline" rel="preload" >  
2SO3(g) ,  Δ\DeltaΔ Hºrxn = -198 kJ/mol
If the volume of the system is compressed at constant temperature, what change will occur in the position of the equilibrium?

Accepted Answer

A)  A shift to produce more SO2
B)  A shift to produce more O2
C)  No change
D)  A shift to produce more SO3

Question 13

The equilibrium constant for the reaction Ni(s) + 4CO(g)     Ni(CO) 4(g) is 5.0 × 104 at 25ºC.What is the equilibrium constant for the reaction Ni(CO) 4(g)          Ni(s) + 4CO(g) ? A) 2.0 × 10-5 B) 2.5 × 109 C) 5.0 × 104 D) 5.0 × 10-4 E) 2.0 × 10-3" class="answers-bank-image d-inline" rel="preload" >    Ni(CO) 4(g) is 5.0 × 104 at 25ºC.What is the equilibrium constant for the reaction Ni(CO) 4(g)  
     Ni(CO) 4(g) is 5.0 × 104 at 25ºC.What is the equilibrium constant for the reaction Ni(CO) 4(g)          Ni(s) + 4CO(g) ? A) 2.0 × 10-5 B) 2.5 × 109 C) 5.0 × 104 D) 5.0 × 10-4 E) 2.0 × 10-3" class="answers-bank-image d-inline" rel="preload" >  
 Ni(s) + 4CO(g) ?

Accepted Answer

A)  2.0 × 10-5
B)  2.5 × 109
C)  5.0 × 104
D)  5.0 × 10-4
E)  2.0 × 10-3

Question 14

Two moles of PCl5 are placed in a 5.0 L container.Dissociation takes place according to the equation PCl5(g)   
PCl3(g)+ Cl2(g).At equilibrium, 0.40 mol of Cl2 are present.Calculate the equilibrium constant (Kc)for this reaction under the conditions of this experiment.

Accepted Answer

Question 15

A solution was prepared such that the initial concentrations of Cu2+(aq)and CN-(aq)were 0.0120 M and 0.0400 M, respectively.These ions react according to the following chemical equation

What will be the concentration of CN-(aq)at equilibrium?

Accepted Answer

8.4 × 10^-7 M

Question 16

For the nitrogen fixation reaction 3H2(g) + N2(g)  2(g) + N2(g)      2NH3(g) , Kc = 6.0 × 10-2 at 500°C.If 0.250 M H2 and 0.050 M NH3 are present at equilibrium, what is the equilibrium concentration of N2? A) 0.750 M B) 2.7 M C) 0.250 M D) 0.025 M E) 1.85 M" class="answers-bank-image d-inline" rel="preload" >   2NH3(g) , Kc = 6.0 × 10-2 at 500°C.If 0.250 M H2 and 0.050 M NH3 are present at equilibrium, what is the equilibrium concentration of N2?

Accepted Answer

A)  0.750 M
B)  2.7 M
C)  0.250 M
D)  0.025 M
E)  1.85 M

Question 17

Consider the chemical reaction 2NH3(g)   
N2(g)+ 3H2(g).The equilibrium is to be established in a 1.0 L container at 1,000 K, where Kc = 4.0 × 10-2.Initially, 1,220 moles of NH3(g)are present.Estimate the equilibrium concentration of H2(g).

Accepted Answer

Question 18

Kp for the reaction CO2(g) + C(s)  p for the reaction CO2(g) + C(s)      2CO(g) is 1.47 at 727°C.Calculate Kc at this temperature A) 1.47 B) 121 C) 0.0246 D) 0.0179 E) 87.7" class="answers-bank-image d-inline" rel="preload" >   2CO(g) is 1.47 at 727°C.Calculate Kc at this temperature

Accepted Answer

A)  1.47
B)  121
C)  0.0246
D)  0.0179
E)  87.7

Question 19

The equilibrium constant for the chemical equation
2NO(g)+ O2(g)   
2NO2(g)
is two times the equilibrium constant for the chemical equation
NO(g)+ 1/2O2(g)   
NO2(g).

Accepted Answer

A) True 
 B)False

Question 20

At 340 K, Kp = 69 for the reaction H2(g) + I2(g)     p = 69 for the reaction H2(g) + I2(g)         2HI(g) .50.0 g of HI is injected into an evacuated 5.00-L rigid cylinder at 340 K.What is the total pressure inside the cylinder when the system comes to equilibrium? A) 2.60 atm B) 1.76 atm C) 0.424 atm D) 2.18 atm E) 10.9 atm" class="answers-bank-image d-inline" rel="preload" >  
2HI(g) .50.0 g of HI is injected into an evacuated 5.00-L rigid cylinder at 340 K.What is the total pressure inside the cylinder when the system comes to equilibrium?

Accepted Answer

A)  2.60 atm
B)  1.76 atm
C)  0.424 atm
D)  2.18 atm
E)  10.9 atm

Exam 14: Chemical Equilibrium

Consider the reaction N₂(g)+ 3H₂(g) 2NH₃(g).If nitrogen is removed from the system at equilibrium, what will happen to the hydrogen (H₂)concentration?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Towards th...
View Answer

Consider the reaction N₂(g)+ 3H₂(g) 2NH₃(g).If nitrogen is added to the system at equilibrium, what will happen to the ammonia concentration?

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

For the reaction PCl₃(g) + Cl₂(g) PCl₅(g) at a particular temperature, K_c = 24.3.Suppose a system at that temperature is prepared with [PCl₃] = 0.10 M, [Cl₂] = 0.15 M, and [PCl₅] = 0.60 M.Which of the following is true based on the above?

Correct Answer
verified
B

When the following reaction is at equilibrium, which of these relationships is always true? 2NOCl(g) 2NO(g) + Cl₂(g)

Correct Answer
verified

Consider the following equilibrium, 4NH₃(g)+ 3O₂(g) 2N₂(g)+ 6H₂O(g)+ 1531 kJ State whether the concentrations the reactants would increase, decrease, or remain constant after nitrogen gas was removed from the system.

Correct Answer
verified

Hydrogen iodide decomposes according to the equation: 2HI(g) H₂(g)+ I₂(g), K_c = 0.0156 at 400ºC A 0.660 mol sample of HI was injected into a 2.00 L reaction vessel held at 400ºC. Calculate the concentration of H₂ equilibrium.

Correct Answer
verified

When the following reaction is at equilibrium, which of these relationships is always true? 2 O₃(g) 3 O₂(g)

Correct Answer
verified

Correct Answer
verified

The equilibrium constant for the reaction Ni(s) + 4CO(g) Ni(CO) ₄(g) is 5.0 × 10⁴ at 25ºC.What is the equilibrium constant for the reaction Ni(CO) ₄(g) Ni(s) + 4CO(g) ?

Correct Answer
verified

Two moles of PCl₅ are placed in a 5.0 L container.Dissociation takes place according to the equation PCl₅(g) PCl₃(g)+ Cl₂(g).At equilibrium, 0.40 mol of Cl₂ are present.Calculate the equilibrium constant (K_c)for this reaction under the conditions of this experiment.

Correct Answer
verified

A solution was prepared such that the initial concentrations of Cu²⁺(aq)and CN^-(aq)were 0.0120 M and 0.0400 M, respectively.These ions react according to the following chemical equation What will be the concentration of CN^-(aq)at equilibrium?

Correct Answer
verified
8.4 × 10^-7 M

For the nitrogen fixation reaction 3H₂(g) + N₂(g) 2NH₃(g) , K_c = 6.0 × 10^-2 at 500°C.If 0.250 M H₂ and 0.050 M NH₃ are present at equilibrium, what is the equilibrium concentration of N₂?

Correct Answer
verified

Consider the chemical reaction 2NH₃(g) N₂(g)+ 3H₂(g).The equilibrium is to be established in a 1.0 L container at 1,000 K, where K_c = 4.0 × 10^-2.Initially, 1,220 moles of NH₃(g)are present.Estimate the equilibrium concentration of H₂(g).

Correct Answer
verified

K_p for the reaction CO₂(g) + C(s) 2CO(g) is 1.47 at 727°C.Calculate K_c at this temperature

Correct Answer
verified

The equilibrium constant for the chemical equation 2NO(g)+ O₂(g) 2NO₂(g) is two times the equilibrium constant for the chemical equation NO(g)+ ¹/₂O₂(g) NO₂(g).

Correct Answer
verified

At 340 K, K_p = 69 for the reaction H₂(g) + I₂(g) 2HI(g) .50.0 g of HI is injected into an evacuated 5.00-L rigid cylinder at 340 K.What is the total pressure inside the cylinder when the system comes to equilibrium?

Correct Answer
verified

Exam 14: Chemical Equilibrium

Consider the reaction N2(g)+ 3H2(g) 2NH3(g).If nitrogen is removed from the system at equilibrium, what will happen to the hydrogen (H2)concentration?

Correct AnswerverifiedShow Answer

Sodium carbonate, Na2CO3(s) , can be prepared by heating sodium bicarbonate, NaHCO3(s) as shown below. 2NaHCO3(s) Na2CO3(s) + CO2(g) + H2O(g) Kp = 0.23 at 100ºC If a sample of NaHCO3 is placed in an evacuated flask and allowed to achieve equilibrium at 100ºC, what will the total gas pressure be?

Correct AnswerverifiedShow Answer

Consider the equilibrium equation C(s)+ H2O(g) CO(g)+ H2(g), Δ\DeltaΔ H = 2296 J.Which way will the reaction shift if the volume of the container is decreased?

Correct AnswerverifiedTowards th...View AnswerShow Answer

Consider the reaction N2(g)+ 3H2(g) 2NH3(g).If nitrogen is added to the system at equilibrium, what will happen to the ammonia concentration?

Correct AnswerverifiedShow Answer

Which of the following rate laws is consistent with the following mechanism? A(g) + B(g) AB(g) fast equilibrium (Kc1) AB(g) + C(g) →\rarr→ AC(g) + B(g) slow

Correct AnswerverifiedB

Consider this gas phase equilibrium system: PCl5(g) PCl3(g) + Cl2(g) Δ\DeltaΔ Hºrxn = +87.8 kJ/mol. Which of these statements is false?

Correct AnswerverifiedShow Answer

For the reaction PCl3(g) + Cl2(g) PCl5(g) at a particular temperature, Kc = 24.3.Suppose a system at that temperature is prepared with [PCl3] = 0.10 M, [Cl2] = 0.15 M, and [PCl5] = 0.60 M.Which of the following is true based on the above?

Correct AnswerverifiedB

When the following reaction is at equilibrium, which of these relationships is always true? 2NOCl(g) 2NO(g) + Cl2(g)

Correct AnswerverifiedShow Answer

Consider the following equilibrium, 4NH3(g)+ 3O2(g) 2N2(g)+ 6H2O(g)+ 1531 kJ State whether the concentrations the reactants would increase, decrease, or remain constant after nitrogen gas was removed from the system.

Correct AnswerverifiedShow Answer

Hydrogen iodide decomposes according to the equation: 2HI(g) H2(g)+ I2(g), Kc = 0.0156 at 400ºC A 0.660 mol sample of HI was injected into a 2.00 L reaction vessel held at 400ºC. Calculate the concentration of H2 equilibrium.

Correct AnswerverifiedShow Answer

When the following reaction is at equilibrium, which of these relationships is always true? 2 O3(g) 3 O2(g)

Correct AnswerverifiedShow Answer

Consider this reaction at equilibrium: 2SO2(g) + O2(g) 2SO3(g) , Δ\DeltaΔ Hºrxn = -198 kJ/mol If the volume of the system is compressed at constant temperature, what change will occur in the position of the equilibrium?

Correct AnswerverifiedShow Answer

The equilibrium constant for the reaction Ni(s) + 4CO(g) Ni(CO) 4(g) is 5.0 × 104 at 25ºC.What is the equilibrium constant for the reaction Ni(CO) 4(g) Ni(s) + 4CO(g) ?

Correct AnswerverifiedShow Answer

Two moles of PCl5 are placed in a 5.0 L container.Dissociation takes place according to the equation PCl5(g) PCl3(g)+ Cl2(g).At equilibrium, 0.40 mol of Cl2 are present.Calculate the equilibrium constant (Kc)for this reaction under the conditions of this experiment.

Correct AnswerverifiedShow Answer

A solution was prepared such that the initial concentrations of Cu2+(aq)and CN-(aq)were 0.0120 M and 0.0400 M, respectively.These ions react according to the following chemical equation What will be the concentration of CN-(aq)at equilibrium?

Correct Answerverified8.4 × 10-7 M

For the nitrogen fixation reaction 3H2(g) + N2(g) 2NH3(g) , Kc = 6.0 × 10-2 at 500°C.If 0.250 M H2 and 0.050 M NH3 are present at equilibrium, what is the equilibrium concentration of N2?

Correct AnswerverifiedShow Answer

Consider the chemical reaction 2NH3(g) N2(g)+ 3H2(g).The equilibrium is to be established in a 1.0 L container at 1,000 K, where Kc = 4.0 × 10-2.Initially, 1,220 moles of NH3(g)are present.Estimate the equilibrium concentration of H2(g).

Correct AnswerverifiedShow Answer

Kp for the reaction CO2(g) + C(s) 2CO(g) is 1.47 at 727°C.Calculate Kc at this temperature

Correct AnswerverifiedShow Answer

The equilibrium constant for the chemical equation 2NO(g)+ O2(g) 2NO2(g) is two times the equilibrium constant for the chemical equation NO(g)+ 1/2O2(g) NO2(g).

Correct AnswerverifiedShow Answer

At 340 K, Kp = 69 for the reaction H2(g) + I2(g) 2HI(g) .50.0 g of HI is injected into an evacuated 5.00-L rigid cylinder at 340 K.What is the total pressure inside the cylinder when the system comes to equilibrium?

Correct AnswerverifiedShow Answer

Consider the reaction N₂(g)+ 3H₂(g) 2NH₃(g).If nitrogen is removed from the system at equilibrium, what will happen to the hydrogen (H₂)concentration?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Towards th...
View Answer

Consider the reaction N₂(g)+ 3H₂(g) 2NH₃(g).If nitrogen is added to the system at equilibrium, what will happen to the ammonia concentration?

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

For the reaction PCl₃(g) + Cl₂(g) PCl₅(g) at a particular temperature, K_c = 24.3.Suppose a system at that temperature is prepared with [PCl₃] = 0.10 M, [Cl₂] = 0.15 M, and [PCl₅] = 0.60 M.Which of the following is true based on the above?

Correct Answer
verified
B

When the following reaction is at equilibrium, which of these relationships is always true? 2NOCl(g) 2NO(g) + Cl₂(g)

Correct Answer
verified

Consider the following equilibrium, 4NH₃(g)+ 3O₂(g) 2N₂(g)+ 6H₂O(g)+ 1531 kJ State whether the concentrations the reactants would increase, decrease, or remain constant after nitrogen gas was removed from the system.

Correct Answer
verified

Hydrogen iodide decomposes according to the equation: 2HI(g) H₂(g)+ I₂(g), K_c = 0.0156 at 400ºC A 0.660 mol sample of HI was injected into a 2.00 L reaction vessel held at 400ºC. Calculate the concentration of H₂ equilibrium.

Correct Answer
verified

When the following reaction is at equilibrium, which of these relationships is always true? 2 O₃(g) 3 O₂(g)

Correct Answer
verified

Correct Answer
verified

The equilibrium constant for the reaction Ni(s) + 4CO(g) Ni(CO) ₄(g) is 5.0 × 10⁴ at 25ºC.What is the equilibrium constant for the reaction Ni(CO) ₄(g) Ni(s) + 4CO(g) ?

Correct Answer
verified

Two moles of PCl₅ are placed in a 5.0 L container.Dissociation takes place according to the equation PCl₅(g) PCl₃(g)+ Cl₂(g).At equilibrium, 0.40 mol of Cl₂ are present.Calculate the equilibrium constant (K_c)for this reaction under the conditions of this experiment.

Correct Answer
verified

A solution was prepared such that the initial concentrations of Cu²⁺(aq)and CN^-(aq)were 0.0120 M and 0.0400 M, respectively.These ions react according to the following chemical equation What will be the concentration of CN^-(aq)at equilibrium?

Correct Answer
verified
8.4 × 10^-7 M

For the nitrogen fixation reaction 3H₂(g) + N₂(g) 2NH₃(g) , K_c = 6.0 × 10^-2 at 500°C.If 0.250 M H₂ and 0.050 M NH₃ are present at equilibrium, what is the equilibrium concentration of N₂?

Correct Answer
verified

Consider the chemical reaction 2NH₃(g) N₂(g)+ 3H₂(g).The equilibrium is to be established in a 1.0 L container at 1,000 K, where K_c = 4.0 × 10^-2.Initially, 1,220 moles of NH₃(g)are present.Estimate the equilibrium concentration of H₂(g).

Correct Answer
verified

K_p for the reaction CO₂(g) + C(s) 2CO(g) is 1.47 at 727°C.Calculate K_c at this temperature

Correct Answer
verified

The equilibrium constant for the chemical equation 2NO(g)+ O₂(g) 2NO₂(g) is two times the equilibrium constant for the chemical equation NO(g)+ ¹/₂O₂(g) NO₂(g).

Correct Answer
verified

At 340 K, K_p = 69 for the reaction H₂(g) + I₂(g) 2HI(g) .50.0 g of HI is injected into an evacuated 5.00-L rigid cylinder at 340 K.What is the total pressure inside the cylinder when the system comes to equilibrium?

Correct Answer
verified